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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Sentence Correction tagged by: BTGmoderatorRO ##### This topic has 1 expert reply and 1 member reply ## Sentence Correction The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980. (A) with such rapidity that the population is one-half (B) with such rapidity that the population was one-half (C) so rapidly the population divided in half (D) so rapidly that the population was halved (E) in such rapidity that the population is halved OA is D Can an expert show me the right verb tense correlation in this question. ould the answer be C or D Legendary Member Joined 21 Jul 2015 Posted: 698 messages Followed by: 26 members Upvotes: 32 Test Date: âˆž â†’ Target GMAT Score: 760 GMAT Score: 740 @Ronald, Can you please also mention the source of the question â†' This way you will attract more answers, quality one.? _________________ R I C H A, My GMAT Journey: 470 â†’ 720 â†’ 740 Target Score: 760+ richacrunch2@gmail.com 1. Press thanks if you like my solution. 2. Contact me if you are not improving. (No Free Lunch!) ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Hello! Thank you for your question. Since you asked mainly about the differences between answers C and D, let's stick to just those. We know the other three options are wrong because they use phrases like "with such rapidity" and "in such rapidity," which are both over wordy and awkward. Now that we've narrowed it down to C and D, let's look at each one and why D is the better answer: The number of mountain gorillas is declining with such rapidity that the population is one-half in the twenty years between a count made by George Schaller in 1960 and the one made by Dian Fossey in 1980. (C) so rapidly the population divided in half When we say " the population divided in half," it suggests that all of the mountain gorillas were still alive, but split into two groups at some point. That's not what the writer is trying to say - he/she means the population is half the size it used to be because half of them died. Therefore, this one is wrong. (D) so rapidly that the population was halved This one is right because it clears up the extra wordiness by simply saying "so rapidly," and by saying the population "was halved," it's clear the writer is saying that half of the population died, which is true. I hope this helps! I'm available if you'd like any follow up. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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